\" \" Who doesn't love to snuggle down into a dark theater with a huge tub of buttered popcorn to watch a great movie? Noam Galai/Getty ImagesHey, movie theater popcorn — you salty siren of the cinema — word's out your kernels are covered in chemicals. Meet movie theater popcorn's three main ingredients: Flavacol, butter flavored topping and, wait for it – buttery flavoring. The one that gives movie theater popcorn it's yummy, irresistible taste? Another slap in the face is that movie theater butter flavored topping has 20 more calories per tablespoon than real butter.